it's found in foods because it is present in the environment. it's also a known carcinogen that's been associated with skin lesions, developmental effects and heart disease. >>> time to eat? minus the arsenic, of course. our fresh grocer tony tantillo here now with a new look at heirloom tomatoes. >> well, today's tip of the day is going to be is going to these beautiful heirloom too many. it's summertime, they are everywhere and the flavor is incredible. but you have to select them and store them right. with all the colors and varieties you will be sitting here all day with what to choose. look at these, yellows, reds, radiator jack, the golden tomato. when you buy them make sure the colors rebright all the way around free from any shriveling whatsoever heavy for their size. one thing about heirloom tomatoes, they pick them when they are fully ripe and send them to market. so buy them and enjoy them within one or two days. the best way i like to enjoy them besides salad, i cut them up, put cheese and vinegar, basil, mint, salt, pepper, olive oi